A vehicle heat shield has a first high thermal resistance composite layer, a second high thermal resistance composite layer, and a gap between the first and second layers. The gap disrupts direct heat transfer between the layers. Also, the gap acts as a thermal insulator to prevent heat buildup.

A modified straw waste composite board and a preparation method thereof. The composite board sequentially comprises a surface layer, a substrate layer, a weight reduction layer, and a protective layer from top to bottom. The invention significantly enhances the comprehensive performance of composite boards by introducing innovative materials such as phosphorus-doped straw-based porous carbon, zinc oxide quantum dots, modified emulsified asphalt, and nano-silicon dioxide. Straw waste has abundant pore structures and excellent mechanical properties, which can improve the flame retardancy and mechanical properties of composite boards; zinc oxide quantum dots can extend the lifespans of composite boards; through scientifically designed components and advanced manufacturing processes, the invention solves the shortcomings of traditional boards, and achieves high-value utilization of agricultural waste, providing new ideas and technical support for the development and application of environmentally friendly composite materials.

A high-frequency dielectric heating adhesive sheet includes an adhesive layer. The adhesive layer contains a thermoplastic resin having a reactive site, a dielectric filler that generates heat upon application of a high-frequency electric field, and a silane coupling agent.

This application discloses a heat-resistant protective member and a battery. The heat-resistant protective member includes a functional layer, and the functional layer includes a first resin and a filler dispersed in the first resin. In this way, the thermal shock when a battery cell is ignited and exploded can be resisted, and the structural integrity can still be maintained without being broken under the thermal shock, thereby providing effective heat insulation and protection for a battery pack.

A layered composite includes: a foam core made of a plastic foam; and a first cover layer and a second cover layer, between which the foam core is arranged, wherein at least one of the cover layers is a fiber material layer containing reinforcement fibers embedded in plastic. A plastic resin fills intermediate spaces between the cover layers in and around the foam core and holds the cover layers and the foam core together. The layered composite includes a fire protection layer made of a composite material on a side of the fiber material layer facing away from the foam core. The composite material contains hollow micro-bodies made of ceramics or glass in a plastic material.